title: Water soluble poly(1-vinyl-1,2,4-triazole) as novel dielectric layer for organic field effect transistors.
abstract: Water soluble poly(1-vinyl-1,2,4-triazole) (PVT) as a novel dielectric layer for organic field effect transistor is studied. Dielectric spectroscopy characterization reveals it has low leakage current and rather high breakdown voltage. Both n-channel and p-channel organic field effect transistors are fabricated using pentacene and fullerene as active layers. Both devices show device performances with lack of hysteresis, very low threshold voltages and high on/off ratios. Excellent film formation property is utilized to make AlOxand thin PVT bilayer in order to decrease the operating voltage of the devices. All solution processed ambipolar device is fabricated with simple spin coating steps using poly(2-methoxy-5-(2-ethyl-hexyloxy)-1,4-phenylenevinylene) (MEH-PPV) end capped with polyhedral oligomeric silsesquioxanes (POSS) as active layer. Our investigations show that PVT can be a very promising dielectric for organic field effect transistors.
authors.affiliation: Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenbergerstr. 69, 4040 Linz, Austria.
authors.forename: Mamatimin
authors.initials: M
authors.lastname: Abbas
authors.forename: Gulbeden
authors.initials: G
authors.lastname: Cakmak
authors.forename: Nalan
authors.initials: N
authors.lastname: Tekin
authors.forename: Ali
authors.initials: A
authors.lastname: Kara
authors.forename: Hasan Yuksel
authors.initials: HY
authors.lastname: Guney
authors.forename: Elif
authors.initials: E
authors.lastname: Arici
authors.forename: Niyazi Serdar
authors.initials: NS
authors.lastname: Sariciftci
keywords: C60; Dielectric; Organic field effect transistor; Pentacene; Polyvinyl triazole